US20130278521A1 - Touch panel and method of manufacturing the same - Google Patents

Touch panel and method of manufacturing the same Download PDF

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Publication number
US20130278521A1
US20130278521A1 US13/866,684 US201313866684A US2013278521A1 US 20130278521 A1 US20130278521 A1 US 20130278521A1 US 201313866684 A US201313866684 A US 201313866684A US 2013278521 A1 US2013278521 A1 US 2013278521A1
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United States
Prior art keywords
conductive mesh
channels
substrate
touch panel
driving
Prior art date
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Abandoned
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US13/866,684
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English (en)
Inventor
Hakyeol KIM
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
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Assigned to SAMSUNG ELECTRONICS CO., LTD. reassignment SAMSUNG ELECTRONICS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KIM, HAKYEOL
Publication of US20130278521A1 publication Critical patent/US20130278521A1/en
Abandoned legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/40—OLEDs integrated with touch screens
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor

Definitions

  • the present invention relates to a touch panel and a method of manufacturing the same. More particularly, the present invention relates to a touch panel using a conductive mesh and a method of manufacturing the same.
  • the touch screen is formed by attaching a touch panel at a front surface of a display panel. That is, the touch screen can perform an input function and a display function.
  • interest has increased in a multi-touch panel that can simultaneously recognize a plurality of touches.
  • FIGS. 1 and 2 are diagrams illustrating a touch panel according to the related art.
  • a touch panel 100 includes a plurality of driving channels 10 for recognizing a horizontal axis coordinate and a plurality of sensing channels 20 for recognizing a vertical axis coordinate.
  • the driving channel 10 and the sensing channel 20 of the touch panel 100 are stacked at different substrates 1 and 2 to have a predetermined separation distance. That is, the touch panel 100 has a 2-layer structure.
  • the driving channel 10 and the sensing channel 20 cross at a plurality of points, as shown in FIG. 1 .
  • the touch panel 100 has 30 crossing points.
  • each crossing point of the touch panel 100 has an area of 4 mm 2 .
  • the touch panel 100 operates by Equation 1.
  • the touch panel 100 should increase a separation distance. Further, as a dielectric constant between the driving channel 10 and the sensing channel 20 increases, the separation distance should be increased. For example, when producing a touch panel having the same performance as that of a touch panel in which the driving channel 10 and the sensing channel 20 are formed at a separation distance of 0.2 mm using a PET film having a dielectric constant of 3.5 using glass having a dielectric constant of 7, the separation distance should be 0.4 mm.
  • the driving channel 10 and the sensing channel 20 are formed using Indium Tin Oxide (ITO).
  • ITO Indium Tin Oxide
  • FIG. 2 Another example of a touch panel 200 is shown in FIG. 2 .
  • the touch panel 200 has a 1-layer double pattern structure that forms a driving channel 15 and a sensing channel 25 in one substrate.
  • the touch panel 200 has an insulating layer 45 at a crossing point of the driving channel 15 and the sensing channel 25 .
  • the touch panel 200 since the driving channel 15 and the sensing channel 25 are formed in one layer, the touch panel 200 has a structure with a very small separation distance. Therefore, to prevent a touch performance from deteriorating, a crossing area of the driving channel 15 and the sensing channel 25 should be minimized. Accordingly, a resistance value of the driving channel 15 and the sensing channel 25 should not be increased.
  • a width of a bridge 35 for connecting the sensing channels 25 and a width of a connecting portion of the driving channels 15 are made smaller than that of the sensing channel 25 and the driving channel 15 , while a resistance value is prevented from increasing, a crossing area is reduced. That is, the touch panel 200 reduces a width of only a crossing portion of the driving channel 15 and the sensing channel 25 .
  • the touch panel 200 when reducing a crossing area by reducing a width of the bridge 35 and a width of the connecting portion, the touch panel 200 has a touch performance relatively lower than that of the touch panel 100 of FIG. 1 due to a narrow width.
  • an aspect of the present invention is to provide a touch panel and a method of manufacturing the same that can reduce a thickness of a touch panel without deterioration of a touch performance by forming a driving channel and a sensing channel with a conductive mesh (e.g., a metal mesh) and that can simplify a production process.
  • a conductive mesh e.g., a metal mesh
  • An aspect of the present invention further provide a touch panel and a method of manufacturing the same having a flexible property and capable of being formed in a large size.
  • a touch panel in accordance with an aspect of the present invention, includes a substrate in which a conductive mesh is disposed, a plurality of driving channels for recognizing a horizontal axis coordinate, wherein the plurality of driving channels are formed by patterning a first conductive mesh disposed at the substrate, a plurality of sensing channels for recognizing a vertical axis coordinate, wherein the plurality of sensing channels are formed by patterning a second conductive mesh disposed at the substrate, and an insulating layer positioned between the first conductive mesh and the second conductive mesh.
  • a touch panel in accordance with another aspect of the present invention, includes a substrate in which a conductive mesh is disposed, a plurality of driving channels for recognizing a horizontal axis coordinate, wherein the plurality of driving channels are formed by patterning a first conductive mesh disposed on a first surface of the substrate, and a plurality of sensing channels for recognizing a vertical axis coordinate, wherein the plurality of sensing channels are formed by patterning a second conductive mesh disposed on a second surface, which is a surface opposite to the first surface of the substrate.
  • a touch panel in accordance with another aspect of the present invention, includes a first substrate and a second substrate, a plurality of driving channels for recognizing a horizontal axis coordinate, wherein the plurality of driving channels are formed by patterning a first conductive mesh disposed on the first substrate, a plurality of sensing channels for recognizing a vertical axis coordinate, wherein the plurality of sensing channels are formed by patterning a second conductive mesh disposed on the second substrate, and a transparent adhesive for adhering the first substrate and the second substrate.
  • a touch panel in accordance with another aspect of the present invention, includes a substrate, a plurality of driving channels for recognizing a horizontal axis coordinate, wherein the plurality of driving channels are formed by printing a first conductive mesh on the substrate, a plurality of sensing channels for recognizing a vertical axis coordinate, wherein the plurality of sensing channels are formed by printing a second conductive mesh on the substrate, and an insulating layer positioned between the first conductive mesh and the second conductive mesh.
  • a method of manufacturing a touch panel includes coating a first conductive mesh on a substrate, patterning the first conductive mesh to correspond to a plurality of driving channels for recognizing a horizontal axis coordinate, coating an insulating layer on a substrate in which the plurality of driving channels are formed, coating a second conductive mesh on the substrate in which the insulating layer is coated, and patterning the second conductive mesh to correspond to a plurality of sensing channels for recognizing a vertical axis coordinate.
  • a method of manufacturing a touch panel includes coating a first conductive mesh on a first surface of a substrate, patterning the first conductive mesh to correspond to a plurality of driving channels for recognizing a horizontal axis coordinate, coating a second conductive mesh on a second surface, which is a surface opposite to the first surface of the substrate, and patterning the second conductive mesh to correspond to a plurality of sensing channels for recognizing a vertical axis coordinate.
  • a method of manufacturing a touch panel includes coating a first conductive mesh on a first substrate, patterning the first conductive mesh to correspond to a plurality of driving channels for recognizing a horizontal axis coordinate, coating a second conductive mesh on a second substrate, patterning the second conductive mesh to correspond to a plurality of sensing channels for recognizing a vertical axis coordinate, and adhering the patterned first and second substrates.
  • a method of manufacturing a touch panel includes printing a first conductive mesh to correspond to a plurality of driving channels for recognizing a horizontal axis coordinate in a substrate, printing an insulating layer in a substrate in which the plurality of driving channels are printed, and printing a second conductive mesh to correspond to a plurality of sensing channels for recognizing a vertical axis coordinate in the substrate in which the insulating layer is printed.
  • a thickness of a touch panel can be reduced without deterioration of a touch performance.
  • a driving channel and a sensing channel using the conductive mesh, lower resistance than that of a related-art transparent electrode (e.g., ITO) can be obtained.
  • a related-art transparent electrode e.g., ITO
  • a conductive mesh is used, even if a touch panel is bent, a crack does not occur in a driving channel and a sensing channel and thus a flexible touch panel can be produced.
  • FIGS. 1 and 2 are diagrams illustrating a touch panel according to the related art
  • FIG. 3 is a flowchart illustrating a process of manufacturing a touch panel according to an exemplary embodiment of the present invention
  • FIGS. 4A and 4B are diagrams illustrating a process of manufacturing a touch panel according to a first exemplary embodiment of the present invention
  • FIGS. 5A and 5B are diagrams illustrating a process of manufacturing a touch panel according to a second exemplary embodiment of the present invention.
  • FIG. 6 is a diagram illustrating a process of manufacturing a touch panel according to a third exemplary embodiment of the present invention.
  • FIG. 7 is a diagram illustrating a process of manufacturing a touch panel according to a fourth exemplary embodiment of the present invention.
  • FIG. 3 is a flowchart illustrating a process of manufacturing a touch panel according to an exemplary embodiment of the present invention.
  • a first conductive mesh is coated on a substrate in step 301 .
  • the first conductive mesh is made of a metal material such as copper, silver, and aluminum.
  • the first conductive mesh may have a line width of several ⁇ m (e.g., 5 ⁇ m). Further, by applying darkening technology and a mesh chemical processing to the conductive mesh, performance deterioration according to a change of a temperature and humidity is minimized.
  • the substrate is a constituent element to be a base that can coat a sensing channel and a driving channel formed with a conductive mesh.
  • the substrate may be a transparent substrate, and when the touch panel is used for a touch pad, the substrate may be an opaque substrate.
  • the substrate is made of a flexible material. Further, the substrate is changed according to a production method of the touch panel.
  • the substrate may be formed with a protection window, display panel, polarizer, and Polyethylene Terephthalate (PET) film. This will be described in detail later.
  • the first conductive mesh is patterned in a first pattern in step 303 .
  • a first conductive mesh coated on the substrate may be patterned in a first pattern using a photo process.
  • the first pattern may be a pattern corresponding to a plurality of driving channels for recognizing a horizontal axis coordinate.
  • an insulating layer is coated in step 305 .
  • the insulating layer is coated on an entire area in which the first conductive mesh is coated (see FIGS. 4A and 4B to be described later) or only at an area in which the driving channel and a sensing channel formed with a second conductive mesh are overlapped (see FIGS. 5A and 5B to be described later).
  • a second conductive mesh is coated in step 307 .
  • the second conductive mesh has the same configuration as that of the first conductive mesh. Therefore, a detailed description thereof is omitted.
  • the second conductive mesh is patterned in a second pattern in step 309 .
  • the second pattern may be a pattern corresponding to a plurality of sensing channels for recognizing a vertical axis coordinate.
  • Steps 301 and 303 may be performed with one process. That is, a conductive mesh may be printed to have a first pattern on the substrate. Similarly, steps 307 and 309 may be performed with one process.
  • the insulating layer may be also stacked on the substrate using a printing method.
  • a process of manufacturing a touch panel according to the present exemplary embodiment may further include the step of printing or coating a protective layer or stacking a protection substrate.
  • the first pattern may include a plurality of first wirings connected to a plurality of driving channels, respectively, and for transmitting a touch signal sensed by a driving channel to a touch processor (e.g., a touch driver IC). That is, in another exemplary embodiment of the present invention, when patterning the first conductive mesh, a driving channel and a first wiring connected to the driving channel may be simultaneously patterned.
  • the second pattern may be connected to a plurality of sensing channels, and a plurality of second wirings for transmitting a touch signal sensed by the sensing channel to a touch processor may be included. That is, in another exemplary embodiment of the present invention, when patterning a second conductive mesh, a sensing channel and a second wiring connected to the sensing channel may be simultaneously patterned. A detailed description thereof will be described later with reference to FIG. 6 .
  • patterning is performed to correspond to a driving channel and a sensing channel, but the aspects of the present invention are not limited thereto.
  • an entire conductive mesh positioned between a driving channel and a sensing channel is not removed and only a partial conductive mesh may be removed. This is to improve visibility. A detailed description thereof will be described later with reference to FIG. 7 .
  • the present invention is not limited thereto.
  • the sensing channel may be coated on one surface (e.g., a front surface) of the substrate
  • the driving channel may be coated on an opposite surface (e.g., a rear surface) of the substrate.
  • a driving channel and a sensing channel are coated on one substrate, but the aspects of the present invention are not limited thereto. That is, in another example of the present invention, the driving channel and the sensing channel may each be formed in different substrates. For example, in the present exemplary embodiment, after the sensing channel is coated on a first substrate and the driving channel is coated on a second substrate, the first substrate and the second substrate may be adhered using a transparent adhesive.
  • FIGS. 4A and 4B are diagrams illustrating a process of manufacturing a touch panel according to a first exemplary embodiment of the present invention.
  • a first conductive mesh 50 is coated on a substrate 40 .
  • the substrate 40 may include a touch area in which a driving channel and a sensing channel for sensing a touch are coated and a wiring area in which wirings for transmitting a touch signal sensed through the driving channel and the sensing channel to a touch processor (e.g., a touch driver IC) are coated.
  • a touch processor e.g., a touch driver IC
  • the first conductive mesh 50 may be coated in a touch area or an entire area of the substrate 40 .
  • the substrate 40 may be a display panel such as a protection window, a Liquid Crystal Display (LCD), and an Organic Light Emitting Diode (OLED), a polarizer or a PET film made of a glass, Poly Carbonate (PC), or Poly Methyl Methacrylate (PMMA) material that may coat a conductive mesh.
  • FIGS. 4A and 4B illustrate the first conductive mesh 50 having a quadrangular structure, however the aspects of the present invention are not limited thereto.
  • the first conductive mesh 50 may have a structure of a lozenge, hive, and nano wire.
  • the first conductive mesh 50 is made of a metal material such as copper, silver, and aluminum.
  • a line width of the first conductive mesh 50 is reduced to several ⁇ m (e.g., 5 ⁇ m) and the first conductive mesh 50 is not viewed by a user using darkening technology and a mesh chemical processing, and performance deterioration according to a change of temperature and humidity is minimized.
  • a touch panel of the present exemplary embodiment is formed to have a flexible property.
  • the first conductive mesh 50 is patterned to have a first pattern corresponding to a plurality of driving channels 51 for recognizing a horizontal axis coordinate.
  • the first conductive mesh 50 is patterned to have a first pattern through a photo process.
  • an insulating layer 60 is coated.
  • the insulating layer 60 is coated to cover the entire plurality of driving channels 51 .
  • the first conductive mesh 50 and the insulating layer 60 are separated, however this is for convenience of description, and the first conductive mesh 50 and the insulating layer 60 are actually sequentially stacked on the substrate 40 .
  • a second conductive mesh 70 is coated in a touch area or an entire area of the substrate 40 .
  • the plurality of driving channels 51 , the insulating layer 60 , and the second conductive mesh 70 are separated, however the plurality of driving channels 51 , the insulating layer 60 , and the second conductive mesh 70 are actually sequentially stacked on the substrate 40 .
  • the second conductive mesh 70 is pattered to have a second pattern corresponding to a plurality of sensing channels for recognizing a vertical axis coordinate.
  • a plurality of driving channels 51 , an insulating layer 60 , and a plurality of sensing channels 71 are separated, however as shown in a cross-sectional view of reference numeral 460 and reference numeral 470 , the plurality of driving channels 51 , the insulating layer 60 , and the plurality of sensing channels 71 are actually sequentially stacked on the substrate 40 .
  • a touch panel according to a first exemplary embodiment of the present invention includes the substrate 40 that can coat a conductive mesh, the first conductive mesh 50 coated in the substrate and patterned to have a first pattern corresponding to the driving channel 51 , the second conductive mesh 70 coated at the substrate 40 and patterned to have a second pattern corresponding to the sensing channel 71 , and the insulating layer 60 positioned between the first conductive mesh 50 and the second conductive mesh 70 .
  • the driving channel 51 and the sensing channel 71 include a plurality of mesh lines and are crossed at a plurality of points.
  • the mesh number of the driving channel 51 is 20
  • the mesh number of the sensing channel 71 is 10
  • a line width of each mesh is 5 ⁇ m
  • a touch panel may be produced so that the driving channel 51 and the sensing channel 71 have a separation distance of tens nm to several ⁇ m.
  • the driving channel 51 and the sensing channel 71 instead of forming the driving channel 51 and the sensing channel 71 with ITO having relatively large resistivity (intrinsic resistance) like a related-art touch panel, by forming the driving channel 51 and the sensing channel 71 with a conductive mesh of a metal material having relatively small resistivity, a separation distance can be remarkably reduced, compared with a case of FIG. 1 , and only a width of a crossing point may not be reduced, like the related-art touch panel 200 of FIG. 2 .
  • FIGS. 5A and 5B are diagrams illustrating a process of manufacturing a touch panel according to a second exemplary embodiment of the present invention.
  • a first conductive mesh is coated, and the coated first conductive mesh is patterned in a first pattern to correspond to a plurality of driving channels for recognizing a horizontal axis coordinate. That is, in a process of providing a touch panel according to a second exemplary embodiment of the present invention, a driving channel 51 is formed through the same process as processes 410 and 420 of FIG. 4 .
  • an insulating layer 65 is coated.
  • the insulating layer 65 is coated only at a crossing area of the driving channel 51 and the sensing channel 71 .
  • a second conductive mesh 70 is coated on the substrate 40 in which the insulating layer 65 is coated.
  • the plurality of driving channels 51 , the insulating layer 65 , and the second conductive mesh 70 are separated, but are actually sequentially stacked on the substrate 40 .
  • the second conductive mesh 70 is pattered in a second pattern to correspond to a plurality of sensing channels for recognizing a vertical axis coordinate.
  • the plurality of driving channels 51 , the insulating layer 65 , and the plurality of sensing channels 71 are separated, but as shown in a cross-sectional view of reference numerals 540 and 550 , the plurality of driving channels 51 , the insulating layer 65 , and the plurality of sensing channels 71 are actually sequentially stacked on the substrate 40 .
  • the drawing of the reference numeral 540 is a cross-sectional view of a touch panel taken in a vertical direction
  • the drawing of reference numeral 550 is a cross-sectional view of a touch panel taken in a horizontal direction.
  • a process of manufacturing a touch panel according to the second exemplary embodiment of the present invention is the same as that of the first exemplary embodiment described with reference to FIGS. 4A and 4B , except for a difference in which an insulating layer is coated only at an area in which a driving channel and a sensing channel are overlapped.
  • FIG. 6 is a diagram illustrating a process of manufacturing a touch panel according to a third exemplary embodiment of the present invention.
  • a wiring for transmitting a touch signal sensed through a driving channel and a sensing channel to a touch processor is together patterned. That is, in the related art, a process of forming a wiring was separately performed.
  • the first conductive mesh 50 may be patterned to have a pattern corresponding to a driving channel 51 and a plurality of first wirings 52 for transmitting a touch signal of the driving channel 51 to a touch processor (touch driver IC).
  • the second conductive mesh 70 may be patterned to have a pattern corresponding to the sensing channel 71 and a plurality of second wirings 72 for transmitting a touch signal of the sensing channel 71 to a touch processor (touch driver IC).
  • a line width of a conductive mesh forming the driving channel 51 and the sensing channel 71 and a line width of a conductive mesh forming the first wiring 52 and the second wiring 72 are different. That is, because the first wiring 52 and the second wiring 72 are positioned at an area not exposed to a user, it is unnecessary to thinly form a line width. Therefore, a line width (e.g., 100 um) of the first wiring 52 and the second wiring 72 may be formed larger than a line width (e.g., 5 um) of the driving channel 51 and the sensing channel 71 . This is to make a resistance value of the first wiring 52 and the second wiring 72 to be low.
  • the first conductive mesh 50 is coated on a touch area and a wiring area of the substrate 40 .
  • the first conductive mesh 50 is patterned to have a pattern corresponding to the driving channel 51 and the first wiring 52 .
  • the insulating layer 65 is coated.
  • FIG. 6 illustrates that the insulating layer 65 is coated only at an area in which the driving channel and the sensing channel are overlapped, as shown in the second exemplary embodiment, but the insulating layer may be coated at a touch area or an entire area of the substrate 40 , as shown in the foregoing first exemplary embodiment.
  • the second conductive mesh 70 is coated, and the second conductive mesh 70 is patterned to have a pattern corresponding to the sensing channel 71 and the second wiring 72 .
  • FIG. 7 is a diagram illustrating a process of manufacturing a touch panel according to a fourth exemplary embodiment of the present invention.
  • the fourth exemplary embodiment of the present invention solves a visibility problem that the driving channel 51 and the sensing channel 71 are viewed to a user. Specifically, when patterning a first conductive mesh 50 in a first pattern, instead of removing an entire conductive mesh 53 of an area other than the driving channel 51 , as in the first exemplary embodiment to the third exemplary embodiment of the present invention, as shown in an enlarged view of FIG.
  • only a minimum conductive mesh may be removed so that a conductive mesh constituting the driving channel 51 and the conductive mesh 53 (first auxiliary mesh) not constituting the driving channel 51 are not electrically connected.
  • a conductive mesh constituting the driving channel 51 and the conductive mesh 53 (first auxiliary mesh) not constituting the driving channel 51 are not electrically connected.
  • only at least one mesh line adjacent to the driving channel 51 may be removed.
  • a second conductive mesh 70 in a second pattern a conductive mesh of an area other than the sensing channel 71 is entirely removed, and as shown in an enlarged view of FIG. 7 , only a minimum conductive mesh may be removed so that a conductive mesh constituting the sensing channel 71 and a conductive mesh 73 (second auxiliary mesh) not constituting the sensing channel 71 are not electrically connected.
  • a mesh line may be removed to have a specific pattern. For example, a first mesh line is removed to 1 ⁇ 3 point from one side end point of the driving channel 51 or the sensing channel 71 , a second mesh line is removed from 1 ⁇ 3 point to 2 ⁇ 3 point, and a first mesh line may be removed from 2 ⁇ 3 point to the other side end point.
  • a process of manufacturing a touch panel according to the present exemplary embodiment may further include the step of printing or coating a protective layer, or stacking a protection substrate in order to protect the sensing channel.
  • the touch panel according to an exemplary embodiment of the present invention forms a driving channel and a sensing channel of the touch panel using a conductive mesh, a crossing area of the driving channel and the sensing channel can be reduced.
  • a distance between a driving channel and a sensing channel can be reduced. That is, a thickness of the touch panel can be reduced without deterioration of a touch performance.
  • the aspects of the present invention can be applied to a method of manufacturing various touch panels.
  • the aspects of the present invention may be applied to a method of stacking a first conductive mesh, insulating layer, and second conductive mesh in a PET film positioned between a display panel and a protection window, a method of stacking a first conductive mesh, insulating layer, and second conductive mesh in a protection window, and a method of stacking a first conductive mesh, insulating layer, and second conductive mesh in a display panel (an upper end portion of a display or a lower end portion of a polarizer).
  • a sensing channel using a conductive mesh may be formed at one surface of a substrate and a driving channel using a conductive mesh may be formed at the other surface (opposite surface) of a substrate.
  • a separate insulating layer may not be included.
  • the substrate may have a thickness of several ⁇ m to hundreds ⁇ m.
  • the first substrate and the second substrate may be adhered using a transparent adhesive.
  • the transparent adhesive may be made of an insulation material.
  • the first substrate, second substrate, and transparent adhesive may have a thickness of several ⁇ m to hundreds ⁇ m.
  • aspects of the present invention may be applied to a protection window in which deco is printed. Particularly, aspects of the present invention may be applied even to a protection window that prints white deco.
  • a transparent electrode ITO
  • a process is performed at a high temperature, and when deco is printed with a white color, a problem that a color of deco is deteriorated existed.
  • a process is performed at a relatively lower temperature.

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US13/866,684 2012-04-23 2013-04-19 Touch panel and method of manufacturing the same Abandoned US20130278521A1 (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150123942A1 (en) * 2014-11-18 2015-05-07 Interface Optoelectronics (Shenzhen) Co., Ltd. Capacitive touch panel
JP2015095168A (ja) * 2013-11-13 2015-05-18 日本写真印刷株式会社 タッチセンサおよびその製造方法
US20160070406A1 (en) * 2014-09-05 2016-03-10 Lg Display Co., Ltd. Touch screen panel and touch screen-integrated display device
US20160216806A1 (en) * 2013-10-22 2016-07-28 Fujifilm Corporation Conductive film, touch panel, and display device
RU2608463C2 (ru) * 2014-05-30 2017-01-18 Сяоми Инк. Способ и устройство управления сенсорным экраном
US20180225000A1 (en) * 2015-01-09 2018-08-09 Samsung Display Co., Ltd. Flexible touch panel and flexible display device
US11596062B2 (en) * 2020-09-30 2023-02-28 Hefei Xinsheng Optoelectronics Technology Co., Ltd. Substrate motherboard and manufacturing method thereof, driving substrate and display device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW201523364A (zh) * 2013-12-10 2015-06-16 Henghao Technology Co Ltd 具網格狀合金觸控電極的觸控面板
CN104978556B (zh) * 2014-04-08 2019-05-10 南昌欧菲生物识别技术有限公司 指纹识别装置及包含其的电子装置

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060097991A1 (en) * 2004-05-06 2006-05-11 Apple Computer, Inc. Multipoint touchscreen
US20120062469A1 (en) * 2010-09-10 2012-03-15 Qrg Limited Touch screen poly layer electrode distribution
US20120062507A1 (en) * 2010-09-13 2012-03-15 Samsung Electro-Mechanics Co., Ltd. Capacitive touch screen and manufacturing method thereof
US20120098551A1 (en) * 2010-10-20 2012-04-26 Alps Electric Co., Ltd. Input device and method of producing input apparatus
US20120154725A1 (en) * 2010-12-15 2012-06-21 Byeong Kyu Jeon Display device integrated with touch screen
US20120162141A1 (en) * 2010-12-28 2012-06-28 Panasonic Corporation Touch screen device and plasma display apparatus having the same
US20120262412A1 (en) * 2011-04-18 2012-10-18 Guard David Brent Touch Sensor with a Conductive Line Having Different Widths
US20130038573A1 (en) * 2008-01-09 2013-02-14 Egalax_Empia Technology Inc. Device and method for detecting touch screen
US20130038563A1 (en) * 2011-08-10 2013-02-14 Esat Yilmaz Substantially Edgeless Touch Sensor
US20130127775A1 (en) * 2011-11-22 2013-05-23 Esat Yilmaz Single-Layer Touch Sensor with Crossovers
US20130168138A1 (en) * 2010-07-05 2013-07-04 Dic Corporation Substrate having transparent conductive layer, method for producing same, transparent conductive film laminate for touch panel, and touch panel
US20130181910A1 (en) * 2012-01-17 2013-07-18 Esat Yilmaz Dual-Substrate-Sensor Stack
US20130271697A1 (en) * 2012-04-11 2013-10-17 Apple Inc. Display having a flexured element

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112008001800B4 (de) * 2007-07-12 2020-07-30 Atmel Corporation Zweidimensionales Touchpanel
CN104636016B (zh) * 2008-02-28 2018-12-18 3M创新有限公司 触屏传感器
CN101672660B (zh) * 2008-04-10 2013-01-02 爱特梅尔公司 电容性位置传感器
TWI376537B (en) * 2008-12-11 2012-11-11 Au Optronics Corp Structure of touch device and touch panel
KR101022105B1 (ko) * 2009-01-16 2011-03-17 삼성모바일디스플레이주식회사 터치 스크린 패널 및 그 제조방법
CN102334091B (zh) * 2009-02-26 2016-01-06 3M创新有限公司 触摸屏传感器和具有低可见度的覆盖微图案的图案化基材
CN102087884A (zh) * 2009-12-08 2011-06-08 中国科学院福建物质结构研究所 基于有机聚合物和银纳米线的柔性透明导电薄膜及其制备方法
TWI396901B (zh) * 2009-12-21 2013-05-21 Au Optronics Corp 製作觸控面板之方法
KR20110100034A (ko) * 2010-03-03 2011-09-09 미래나노텍(주) 정전 용량 방식 터치 패널 및 그 제조방법
WO2011108869A2 (ko) * 2010-03-03 2011-09-09 미래나노텍 주식회사 정전 용량 방식 터치 패널 및 그 제조방법
KR101066932B1 (ko) * 2010-03-12 2011-09-23 박준영 터치패널용 패드의 제조방법 및 이에 의해 제조되는 터치패널용 패드
KR101675844B1 (ko) * 2010-06-10 2016-11-30 엘지디스플레이 주식회사 터치 패널 일체형 액정 표시 장치 및 이의 제조 방법
US8797281B2 (en) * 2010-06-16 2014-08-05 Atmel Corporation Touch-screen panel with multiple sense units and related methods
US8723834B2 (en) * 2010-07-28 2014-05-13 Atmel Corporation Touch sensitive screen configurations

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060097991A1 (en) * 2004-05-06 2006-05-11 Apple Computer, Inc. Multipoint touchscreen
US20130038573A1 (en) * 2008-01-09 2013-02-14 Egalax_Empia Technology Inc. Device and method for detecting touch screen
US20130168138A1 (en) * 2010-07-05 2013-07-04 Dic Corporation Substrate having transparent conductive layer, method for producing same, transparent conductive film laminate for touch panel, and touch panel
US20120062469A1 (en) * 2010-09-10 2012-03-15 Qrg Limited Touch screen poly layer electrode distribution
US20120062507A1 (en) * 2010-09-13 2012-03-15 Samsung Electro-Mechanics Co., Ltd. Capacitive touch screen and manufacturing method thereof
US20120098551A1 (en) * 2010-10-20 2012-04-26 Alps Electric Co., Ltd. Input device and method of producing input apparatus
US20120154725A1 (en) * 2010-12-15 2012-06-21 Byeong Kyu Jeon Display device integrated with touch screen
US20120162141A1 (en) * 2010-12-28 2012-06-28 Panasonic Corporation Touch screen device and plasma display apparatus having the same
US20120262412A1 (en) * 2011-04-18 2012-10-18 Guard David Brent Touch Sensor with a Conductive Line Having Different Widths
US20130038563A1 (en) * 2011-08-10 2013-02-14 Esat Yilmaz Substantially Edgeless Touch Sensor
US20130127775A1 (en) * 2011-11-22 2013-05-23 Esat Yilmaz Single-Layer Touch Sensor with Crossovers
US20130181910A1 (en) * 2012-01-17 2013-07-18 Esat Yilmaz Dual-Substrate-Sensor Stack
US20130271697A1 (en) * 2012-04-11 2013-10-17 Apple Inc. Display having a flexured element

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10606426B2 (en) 2013-10-22 2020-03-31 Fujifilm Corporation Touch panel electrode comprising a base, two or more first electrode patterns, and two or more second electrode patterns, touch panel, and display device
US20160216806A1 (en) * 2013-10-22 2016-07-28 Fujifilm Corporation Conductive film, touch panel, and display device
US10528193B2 (en) * 2013-10-22 2020-01-07 Fujifilm Corporation Touch panel electrode comprising a base, two or more first electrode patterns, and two or more second electrode patterns, touch panel, and display device
US11179915B2 (en) 2013-10-22 2021-11-23 Fujifilm Corporation Touch panel electrode comprising two or more first electrode patterns, and two or more second electrode patterns, touch panel, and display device
JP2015095168A (ja) * 2013-11-13 2015-05-18 日本写真印刷株式会社 タッチセンサおよびその製造方法
RU2608463C2 (ru) * 2014-05-30 2017-01-18 Сяоми Инк. Способ и устройство управления сенсорным экраном
US9785295B2 (en) 2014-05-30 2017-10-10 Xiaomi Inc. Touch screen control method and device
US20160070406A1 (en) * 2014-09-05 2016-03-10 Lg Display Co., Ltd. Touch screen panel and touch screen-integrated display device
US9459750B2 (en) * 2014-09-05 2016-10-04 Lg Display Co., Ltd. Touch screen panel and touch screen-integrated display device
US9772728B2 (en) * 2014-11-18 2017-09-26 Interface Optoelectronics (Shenzhen) Co., Ltd. Capacitive touch panel with additional subsidiary receiver mesh electrodes
US20150123942A1 (en) * 2014-11-18 2015-05-07 Interface Optoelectronics (Shenzhen) Co., Ltd. Capacitive touch panel
US20180225000A1 (en) * 2015-01-09 2018-08-09 Samsung Display Co., Ltd. Flexible touch panel and flexible display device
US11061516B2 (en) 2015-01-09 2021-07-13 Samsung Display Co., Ltd. Flexible touch panel and flexible display device
US10585526B2 (en) * 2015-01-09 2020-03-10 Samsung Display Co., Ltd. Flexible touch panel and flexible display device
US11347358B2 (en) 2015-01-09 2022-05-31 Samsung Display Co., Ltd. Flexible touch panel and flexible display device
US11586329B2 (en) 2015-01-09 2023-02-21 Samsung Display Co., Ltd. Flexible touch panel and flexible display device
US11807487B2 (en) 2015-01-09 2023-11-07 Samsung Display Co., Ltd. Flexible touch panel and flexible display device
US11596062B2 (en) * 2020-09-30 2023-02-28 Hefei Xinsheng Optoelectronics Technology Co., Ltd. Substrate motherboard and manufacturing method thereof, driving substrate and display device

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IN2014DN08757A (de) 2015-05-22
EP2657818A2 (de) 2013-10-30
EP2657818A3 (de) 2016-02-10
KR20130119045A (ko) 2013-10-31
WO2013162241A1 (en) 2013-10-31
CN104246671A (zh) 2014-12-24

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